Pressure Tech™ Test Sub
The CleanWell® Pressure Tech™ test sub is designed to allow drillpipe to be /exed and shocked, assisting with cement sheath, scale or debris removal. O0en the same drillpipe on the rig is used when running and cementing the liner for the displacement. Rather than introducing and handling residual debris throughout the displacement, the Pressure Tech test sub allows the string to be /exed and shocked, allowing debris to be reversed out to surface.1is process is typically completed in mud or in combination with a good carrying capacity /uid or system so that debris can be transported to surface.
The test sub is equipped with a reverse catch to prevent the ball from being reversed out with the debris. Tremendous in-line /ow area around the ball allows the displacement to be completed without a circulating /ow restriction or concern, once the /exing sequence is complete. If the drillpipe is to be used on subsequent gravel or frac pack operations, the Pressure Tech test sub can be deployed deep and used to pressure test the drill pipe integrity before critical use.The Pressure Tech test sub can be used in conjunction with other downhole pressure-activated systems.